APA (7th ed.) Citation

Summers, D. A. (1980). Water jet drilling horizontal holes in coal. Mining Engineering, 32, 698.

Chicago Style (17th ed.) Citation

Summers, D. A. "Water Jet Drilling Horizontal Holes in Coal." Mining Engineering 32 (1980): 698.

MLA (9th ed.) Citation

Summers, D. A. "Water Jet Drilling Horizontal Holes in Coal." Mining Engineering, vol. 32, 1980, p. 698.